Lubricator



March 22,1938. 05 v 2,111,583

Filed Sept. 16, 1935 MEDQL JOHN 06 M00) INVENTOR ATTORNEY Patented Mar. 22, 19 38 UNITED STATES PATENT OFFICE LUBRICATOR John De Mooy, Shaker Heights, Ohio, assignor to The Cleveland Pneumatic Tool Company, Cleveland, Ohio, a' corporation of Ohio Application September 1611935, Serial No. 40,676 4 Claims. X01. 184-55) This invention relates broadly to lubricators, the bore 19, and provided with a screw driver but more particularly to lubricator-for fluid actuslot 26. ated machines. Reciprocably mounted within the valve block One object of this invention is to produce an assembly l5, there is a valve 21 having motive :3 improved lubricator of simple construction, which fluid admitted thereto from the bore 2|, through 5 is strong, durable, and efflcient. a slot 28, port 29 and passages 30 and 3|. From Another object of this invention is to provide the valve, motive fluid may be admitted into the a fluid actuated machine with a lubricator havrear end of the cylinder to through a passage 32 ing means incorporated therein capable of filterand into theiront end thereof via a passage 33,

ing the lubricant before its admission to the movto actuate the piston l l 10 ing parts of the machine. Referring now more particularly to thepresent Another object of this invention is to provide invention, designates a sleeve having an ina lubricator for fluid actuated machines, which ternal wall constitutin an Out et ur a Th s can readily be adjusted to control the amount of sleeve is located within the stem I6 with its front lubricant admitted to the working parts of the end snug mounted Within the eollllterbore machine. This sleeve or regulator extends into the bush- Other objects and advantages more or less anins n slidable fluid tight relation with the ciliary to the foregoing reside in the specific coninner wall thereof. The sleeve 34 is made hi I struction and aggroupment of the elements pep r u m al. th p p se of whi h will be exgu culiar to this structure, as will become apparent p a e e a The eollnterbol'e 23 is in from a more complete examination of this speciconstant communication with the reservoir I'I :fication. through a port 35. The reservoir I I may be filled In the drawing: with lubricant such as oil or liquid grease, by Fig. 1 is an elevational sectional view illustratremoving a flller p 2.3 inga portion of a fluid actuated machine hav- Assuming that motive fluid'is admitted into the ing the invention applied, ther to, bore I9 from a conduit secured to the machine Fig. 2 is a cross sectional view taken through a y e e d d C ection 0, and that the plane indicated by lin L4 in Fi 1', reservoir I1 is filled with lubricant, the opera-' In this illustrative construction, Ill represents tion 0f the device Will be as follows: The motive 3c the ylinder of a fluid t t machine having "fluid from the bore 19 is free to flow through the 0 p a hammer piston ll reciprocable therein. Se- Sleeve regulator 34 into the o rom cured to the end of the cylinder in screw threaded Where it is admitted o e alve 21 via the slot relation therewith, there is a hollow head l2 p t 9, and passa s a d 31-. From the formed with an internal annula houlde l3, valve 21, the motive fluid is alternatively admitted Between the end of the cylinder In and the shoulinto the rear and front end o he cylinder I0 der it, the head I2 is accurately machined to rethrough e Passages 32 and 33 respect1vely. t0

ceive a plate l4 and valve block assembly {5, actuate the PiStOII h are 7 operatively clamped therebetween. During the passage of the motive fluid through The plate) hasla stem l6 extending upwardly the Sleeve and especially w e the pressure therefrgm. n ac d lam t mni of I of the motive fluid therein is increased due to the 4 the r ngb head n to f rm 3 1 piston H reaching the ends of its stroke and t h mb ert yi-fie ervoir n, h free n of t compressing the motive fluid within the correstern ltiss'nugly' mounted within a counterbore Spending end of t cylinder, the motive fluid M it formedin the head H, which communicates will wth i the po o s l of the sleeve to the exteriorthereof through a centra l mg. 34 into thefcounterbore 23, from where it is adnosed borelfl, This bore is threaded as at.2l| to mltted into e T8581 V01! V the p 3 e receive oneend of a motive fluid conduit. movement of the p o way om One end Formed through the stem l6, the e i a b re portion of the cylinder within which motive fluid 0 ill disposed in coaxial alignment with the bore l9 is admitted. wi l permit h expansion of e and extending through the plate It. Toward the motive fl d her thus causing a rop of pr free end of the stem, this bore is enlarged to form sure of the motive fluid fl g through t e Sleeve counterbores 22 and 23, the latter being threaded 34 and bore 2 The Pressure of the ve u d to operatively receive a bushing 24 having a head p eli 'a' to e servoir I"! bein iii in slidable engagement with the inner wall of at that instant higher than that of the motive 55 fluid in the sleeve 34, will force the lubricant into the counterbore 23 through the port 15, and therefrom through the porous wall of the sleeve 34 from the external side thereof or inlet sur- .face to the internal side or outlet surface of the wall, where it will mingle with the motive fluid and be carried thereby to the moving parts of the machine.

From the foregoing, it will be understood that the amount of the lubricant admitted into the motive fluid, is proportional to the area of the external wall of the sleeve 34, that is the inlet area, exposed to the lubricant. This area may be varied by rotating the bushing 24. For instance when it is desired to reduce the amount of the lubricant admitted into the motive fluid, the bushing 24 may be rotated to bring the front end thereof toward the bottom of the counterbore 23, reducing thereby the area of the external Wall of the sleeve exposed to the lubricant. When it is desired to increase the amount of lubricant admitted into the motive fluid, the bushing 25 may be rotated to move the front end thereof away from the bottom of the counterbore 23, thus increasing the area of the sleeve exposed to the lubricant.

Due to the flow of the motive fluid back and forth through the wall of the sleeve 34, the pores formed in the wall of the sleeve are apt to be kept free from extraneous matter accidentally admitted in the lubricant or the motive fluid. However, in the event the pores should become obstructed sufllciently to prevent the passage of a predetermined amount of lubricant, the bush- 1 ing may be rotated to expose a new area of the external wall of the sleeve to the lubricant.

From the foregoing, it will be seen that the present lubricator is of very simple construction, which is strong, durable, and eflicient. It will further be understood that the amount of the lubricant admitted into the motive fluid may be regulated in a manner making the lubricator adaptable for any kind of fluid actuated machine, irrespective of the viscosity of the lubricant required.

Although the foregoing description is necessarily of a detailed character, in order to completely set forth the invention, it is to be understood that the specific terminology is not intended to be restrictive or confining and it is to be further understood that various rearrangements of parts and modification of structural detail may be resorted to without departing from the scope or spirit of the invention as herein claimed.

I claim:

1. In a lubricator for a fluid actuated machine, a casing having motive fluid admitted therein. a reservoir having lubricant stored therein, means for conveying lubricant from said reservoir to said motive fluid including a wall formed of porous metal through which lubricant can flow, and means operable for selectively varying the size of the area of said wall through which lubricant can flow, thus selectively controlling the amount of lubricant conveyed from said reservoir to the motive fluid aforesaid.

2. In a lubricator for a fluid actuated machine, a casing having motive fluid admitted therein, a reservoir having lubricant stored therein, means for conveying lubricant from said reservoir to said motive fluid including a wall formed of porous metal having a surface exposed to the lubricant from where the latter can flow through said wall due to the poriferous characteristic of said metal to the motive fluid aforesaid, and adjustable means for varying the area of said surface, thus selectively controlling the amount of lubricant conveyed from said reservoir.

3. In a lubricator, a casing, a reservoir having lubricant stored therein, means for conveying lubricant from said reservoir, lubricant filtering means including a wall formed of porous mate rial, said wall arranged and disposed in a manner whereby the lubricant is forced to pass through a portion thereof during its flow from said reservoir, and means for selectively subjecting another portion of said wall to the passage of the lubricant when the flow of the latter through said flrst mentioned portion has been restricted due to the obstruction thereof.

4. In a lubricator for a fluid actuated machine, a wall formed of porous metal having an inlet and an outlet surface, adjustable means for varying the effective area of said inlet surface, means for admitting lubricant to the inlet surface of said wall from where it is capable of flowing through the pores of the wall to the outlet surface thereof, and means for admitting motive fluid on said outlet surface for carrying the lubricant into the machine.

JOHN DE MOOY. 

